Robert Ketchum is a landscape and nature photographer whose work has been noted for having strong messages towards advocacy for the environment. As an undergraduate he studied design, but soon he began to study history and in 1974 he received his M.F.A in photography.

Audubon magazine named him one of the top 100 people who shaped the 21st century environmental movement. Brother Ketchum was given the Master Series distinction by American Photo Magazine in 2010. He is one of four recipients of this honor and the only environmental photographer to earn it.

In 1989 Ketchum won the Ansel Adams Award for Conservation Photography given to him by the Sierra Club. On top of his accomplishments as a photographer, he is a renowned curator and a seven time published author.